Advertisements
Advertisements
Question
Define matter. Give four examples of matter.
Solution
Matter: Anything that occupies space and has mass is known as matter. The examples of matter are iron, wood, air and water.
APPEARS IN
RELATED QUESTIONS
What do you mean by the inter-molecular spaces? How do they vary in different states of matter?
Give one difference between atoms and molecules.
What are the two conditions for the interconversion of states of matter ?
Which of the following is a mixture ?
Salt, Air, Water, Alum, Sugar
What is meant by saying that metals are malleable and ductile ?
What are the three general classes of matter ? Give one example of each type.
The element which is not common between the compounds called baking soda and soda ash is
Which of the following statements are true for pure substances ?
- pure substances contain only one kind of particles
- pure substances may be compounds or mixtures
- pure substances have the same composition throughout
- pure substances can be exemplified by all elements other than nickel
Iron powder and sulphur powder were mixed together and divided into two parts A and B. When part A was heated strongly over a burner, then a substance C was formed. The part B was, however, not heated at all. When dilute hydrochloric acid was added to substance C, then gas D was evolved and when dilute hydrochloric acid was added to part B then gas E was evolved.
- What type of substance is B ?
- What type of substance is C ?
- Name the gas (i) D, and (ii) E ?
- State one characteristic property of gas D.
- Write one test to identify gas E.
Choose the correct answer.
A 15% alcohol solution means :
Define solvent.
Define Sol and give one example.
Fill in the following blanks with suitable words :
Immiscible liquids are separated by using a .....................
How will you separate iron pins from sand ?
Tincture of iodine is a mixture of two materials X and Y. The material Y has a property that its solid form can be converted directly into vapours on heating by a process called Z.
- What could X be ?
- What could Y be ?
- Name the process Z.
- Which process would you use to recover both the components X and Y from tincture of iodine ?
- Which process can be used to recover only component Y from tincture of iodine ?
The non S I and S I units of some physical quantities are given in column A and column B respectively. Match the units belonging to the same physical quantity:
(A) | (B) | ||
(a) | degree celsius | (i) | kilogram |
(b) | centimetre | (ii) | pascal |
(c) | gram per centimetre cube | (iii) | metre |
(d) | bar | (iv) | kelvin |
(e) | milligram | (v) | kilogram per metre cube |
Which of the following are homogeneous in nature?
(i) ice
(ii) wood
(iii) soil
(iv) air
Intermolecular space is maximum in ______.
The fluidity of solids: ______.
Define the term matter.